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13 条记录 (耗时 0.014 秒)

    DEVICE AND METHOD FOR GENERATING A COLLIMATED BEAM OF ACOUSTIC ENERGY IN A BOREHOLE
    1.
    发明公开
    DEVICE AND METHOD FOR GENERATING A COLLIMATED BEAM OF ACOUSTIC ENERGY IN A BOREHOLE 有权
    装置和方法，用于产生准直声能量束的孔

    公开(公告)号：EP2577357A2

    公开(公告)日：2013-04-10

    申请号：EP11727347.4

    申请日：2011-05-06

    申请人： Chevron U.S.A. Incorporated ,  Los Alamos National Security LLC

    发明人： VU, Cung Khac ,  SINHA, Dipen N. ,  PANTEA, Cristian ,  NIHEI, Kurt T. ,  SCHMITT, Denis P. ,  SKELT, Christopher

    IPC分类号： G01V1/42 ,  G01V1/46

    CPC分类号： G01V1/00 ,  G01V1/006 ,  G01V1/46

    摘要： In some aspects of the invention, a method of generating a beam of acoustic energy in a borehole is disclosed. The method includes generating a first acoustic wave at a first frequency; generating a second acoustic wave at a second frequency different than the first frequency, wherein the first acoustic wave and second acoustic wave are generated by at least one transducer carried by a tool located within the borehole; transmitting the first and the second acoustic waves into an acoustically non-linear medium, wherein the composition of the non-linear medium produces a collimated beam by a non-linear mixing of the first and second acoustic waves, wherein the collimated beam has a frequency based upon a difference between the first frequency and the second frequency; and transmitting the collimated beam through a diverging acoustic lens to compensate for a refractive effect caused by the curvature of the borehole.

    DEVICE AND METHOD FOR GENERATING A COLLIMATED BEAM OF ACOUSTIC ENERGY IN A BOREHOLE
    2.
    发明公开
    DEVICE AND METHOD FOR GENERATING A COLLIMATED BEAM OF ACOUSTIC ENERGY IN A BOREHOLE 审中-公开
    装置和方法，用于产生准直光束OFF声能一个洞

    公开(公告)号：EP2577354A2

    公开(公告)日：2013-04-10

    申请号：EP11720266.3

    申请日：2011-05-06

    申请人： Chevron U.S.A. Incorporated ,  Los Alamos National Security LLC

    发明人： VU, Cung Khac ,  SINHA, Dipen, N. ,  PANTEA, Cristian ,  NIHEI, Kurt, T. ,  SCHMITT, Denis, P. ,  SKELT, Christopher

    IPC分类号： G01V1/04 ,  G01V1/40 ,  G01V1/46

    CPC分类号： G01V1/46

    摘要： In some aspects of the invention, a method of generating a beam of acoustic energy in a borehole is disclosed. The method includes generating a first broad-band acoustic pulse at a first broad-band frequency range having a first central frequency and a first bandwidth spread; generating a second broad-band acoustic pulse at a second broad-band frequency range different than the first frequency range having a second central frequency and a second bandwidth spread, wherein the first acoustic pulse and second acoustic pulse are generated by at least one transducer arranged on a tool located within the borehole; and transmitting the first and the second broad-band acoustic pulses into an acoustically non-linear medium, wherein the composition of the non-linear medium produces a collimated pulse by a non-linear mixing of the first and second acoustic pulses, wherein the collimated pulse has a frequency equal to the difference in frequencies between the first central frequency and the second central frequency and a bandwidth spread equal to the sum of the first bandwidth spread and the second bandwidth spread.

    APPARATUS AND METHOD FOR ACOUSTIC MONITORING OF STEAM QUALITY AND FLOW
    10.
    发明公开
    APPARATUS AND METHOD FOR ACOUSTIC MONITORING OF STEAM QUALITY AND FLOW 审中-公开
    装置和方法为品质声学监测和蒸汽流

    公开(公告)号：EP2684011A2

    公开(公告)日：2014-01-15

    申请号：EP12754313.0

    申请日：2012-03-07

    申请人： Los Alamos National Security, LLC

    发明人： SINHA, Dipen N. ,  PANTEA, Cristian

    IPC分类号： G01F1/66

    CPC分类号： G01N29/036 ,  G01F1/666

    摘要： An apparatus and method for noninvasively monitoring steam quality and flow and in pipes (12) or conduits bearing flowing steam (14), are described. By measuring the acoustic vibrations generated in steam-carrying conduits by the flowing steam either by direct contact (20) with the pipe or remotely thereto (16), converting the measured acoustic vibrations (32, 34, 36) into a frequency spectrum characteristic of the natural resonance vibrations of the pipe, and monitoring the amplitude and/or the frequency of one or more chosen resonance frequencies (36), changes in the steam quality in the pipe are determined. The steam flow rate and the steam quality are inversely related, and changes in the steam flow rate are calculated from changes in the steam quality once suitable calibration curves are obtained.